<ARTICLE>                                                              UT
<LEGEND>       THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION
               EXTRACTED FROM THE UNAUDITED FINANCIAL STATEMENTS OF
               WISCONSIN ENERGY CORPORATION FOR THE NINE MONTHS ENDED
               SEPTEMBER 30, 1999 AND IS QUALIFIED IN ITS ENTIRETY BY
               REFERENCE TO SUCH FINANCIAL STATEMENTS.
<MULTIPLIER>                                                        1,000
                                                           
<CURRENCY>                                                    U.S.DOLLARS
<FISCAL-YEAR-END>                                             DEC-31-1999
<PERIOD-START>                                                JAN-01-1999
<PERIOD-END>                                                  SEP-30-1999
<PERIOD-TYPE>                                                       9-MOS
<EXCHANGE-RATE>                                                         1
<BOOK-VALUE>                                                     PER-BOOK
<TOTAL-NET-UTILITY-PLANT> <F1>                                  3,307,874
<OTHER-PROPERTY-AND-INVEST> <F2>                                1,448,834
<TOTAL-CURRENT-ASSETS>                                            639,747
<TOTAL-DEFERRED-CHARGES>                                                0
<OTHER-ASSETS>                                                    535,835
<TOTAL-ASSETS>                                                  5,932,290
<COMMON>                                                            1,177
<CAPITAL-SURPLUS-PAID-IN>                                         813,182
<RETAINED-EARNINGS> <F3>                                        1,176,443
<TOTAL-COMMON-STOCKHOLDERS-EQ>                                  1,990,802
<PREFERRED-MANDATORY>                                                   0
<PREFERRED>                                                        30,450
<LONG-TERM-DEBT-NET>                                            1,174,413
<SHORT-TERM-NOTES>                                                 50,695
<LONG-TERM-NOTES-PAYABLE>                                         635,708
<COMMERCIAL-PAPER-OBLIGATIONS>                                    333,344
<LONG-TERM-DEBT-CURRENT-PORT>                                      54,822
<PREFERRED-STOCK-CURRENT>                                               0
<CAPITAL-LEASE-OBLIGATIONS>                                       178,926
<LEASES-CURRENT>                                                   26,308
<OTHER-ITEMS-CAPITAL-AND-LIAB> <F4>                             1,456,822
<TOT-CAPITALIZATION-AND-LIAB>                                   5,932,290
<GROSS-OPERATING-REVENUE>                                       1,687,022
<INCOME-TAX-EXPENSE>                                               92,178
<OTHER-OPERATING-EXPENSES>                                      1,349,707
<TOTAL-OPERATING-EXPENSES> <F5>                                 1,349,707
<OPERATING-INCOME-LOSS> <F5>                                      337,315
<OTHER-INCOME-NET>                                                 34,860
<INCOME-BEFORE-INTEREST-EXPEN> <F6>                               372,175
<TOTAL-INTEREST-EXPENSE> <F7>                                     108,730
<NET-INCOME> <F8>                                                 171,267
<PREFERRED-STOCK-DIVIDENDS> <F9>                                        0
<EARNINGS-AVAILABLE-FOR-COMM>                                     171,267
<COMMON-STOCK-DIVIDENDS>                                          136,309
<TOTAL-INTEREST-ON-BONDS>                                               0
<CASH-FLOW-OPERATIONS>                                            372,551
<EPS-BASIC>                                                        1.47
<EPS-DILUTED>                                                        1.47
<FN>
<F1>  TOTAL NET UTILITY PLANT IS $3,858,948 OF NET PROPERTY,
      PLANT AND EQUIPMENT LESS $551,074 OF NET NON-UTILITY
      PROPERTY.
<F2>  OTHER PROPERTY AND INVESTMENTS IS $897,760 OF INVESTMENTS
      PLUS $551,074 OF NET NON-UTILITY PROPERTY.
<F3>  RETAINED EARNINGS IS NET OF $2,606 OF UNEARNED COMPENSATION
      FOR RESTRICTED STOCK AWARDS.
<F4>  OTHER ITEMS - CAPITAL AND LIABILITIES INCLUDES $200,000
      OF COMPANY-OBLIGATED, MANDATORILY REDEEMABLE PREFERRED
      SECURITIES OF SUBSIDIARY TRUST HOLDING SOLELY DEBENTURES
      OF THE COMPANY.
<F5>  TOTAL OPERATING EXPENSES AND OPERATING INCOME OR LOSS EXCLUDE
      INCOME TAXES OF $92,178.
<F6>  INCOME BEFORE INTEREST EXPENSE AND INCOME TAXES.
<F7>  TOTAL INTEREST EXPENSE INCLUDES $7,078 OF DISTRIBUTIONS ON
      PREFERRED SECURITIES OF SUBSIDIARY TRUST AND $902 OF PREFERRED
      DIVIDEND REQUIREMENTS OF SUBSIDIARY.
<F8>  NET INCOME IS AFTER INCOME TAXES OF $92,178.
<F9>  PREFERRED STOCK DIVIDENDS ARE INCLUDED IN TOTAL INTEREST EXPENSE.
SEE FINANCIAL STATEMENTS AND NOTES IN THE ACCOMPANYING 10-Q.
</FN>